The profusion of skin colors and physical characteristics of different humans is due to the differences in climate and other living conditions humans encountered as they populated the globe.
Skin color- The actual skin color of different humans depends on many factors, particularly on the pigment melanin. The main substance effecting the production of melanin is the pigment melanin and it is the determinant of the outcomes of hair and skin color in darker-skinned members of the human population.
Melanin- Melanin, which is produced by your skin, emits protective [DNA/RNA] tags called microRNAs that stop the harmful release of free radicals and prevent sun damage.
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